Vehicle-spring.



G. JUTRUCANO.

VEHICLE SPRING.

APPLICATION'FILED JULY s. 1915.

Patented Apr. 11, 1916 l/VVE/VTOR srfix ATTORNEY WITNESSES:

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CHARLES J. TRUCANO, L OLE ELUM, VIASHING-TGN, ASSIGN 0E 0F FOB'IY-NINEONE- HUNDREDTZ-IS TO BATTISTA SALVTNI, 0F KITTITAS COUNTY, 'WASJHINGTQN.

VEHICLE SPRIHG.

specification of Letters latent.

Patented Apr. 13, 1%16.

Application filed July 3, 3.915. Serial Ho. 393797.

. o-b'ect to provide an arran einent of sorin' s 7 i L. E

which will permit of adjustments as to the range of deflection due tovariations in either load or road conditions.

A further object is to provide means-for adjusting the spring andcontainer to vary the distance between the tread of the wheel and theframe of the truck in such a way as to allow the load on the truck tomaintain. a more nearly horizontal position while traveling on a grade.

()ther objects will appear as my invention is more fully explained inthe following specification, illustrated in the accompany ing drawingsand pointed out in the appended claim.

In the drawings, Figure 1 is a fragnien tary side elevation of a rearaxle of a truck frame and one of my improved springs. Fig. 2 is asimilar front elevation of a front wheel. Fig. 8 is an enlargedfragmentary section of my device.

Referring more particularly to the draivings, numeral 1 indicates afragment of. a truck frame to which my device is secured.

My device includes a cylinder 2 which" is open at both ends and hasflanged lugs 3 for securing it to the truclr 1. Cylinder 2 is providedwith a cap 4. adapted to be secured. to the top of the cylinder. Cap 4may be of any desired length to suit coiled sprin 's 5 which are on rods6. Rods 5 pass through holes in the top of cap 4, through. springs 5 andloosely through a pressure plate 2 which is slidably mounted within cap4 and is secured to the top of a vertical shaft 8 in such a as to allowthe to revolve with respect to pressure plate '3 but not to becomeseparated therefrom. Vertical guides 9 hold pressure plate 7 againstrotation. By means of nuts 10 on the upper ends of rods 6, the initialcompression in springs 5 may be varied by drawing up plate 'Z. Cylinder2 has an internal flange ll at the lower end. A check ring 12 adjustahly secured to shaft 8 by set screws 13 limits the downwardmovement of shaft 8. Holes in cylinder 2 allow set screws '13 to beloosened from without the cylinder. On the lower end of vertical shaft 8is a bearing 1% which is adapted to support a journal for a tractionwheel 15. On the rear end of the frame, a jointed axle 16 is used whileon the front end steering lugs 17 and rods 18 are used to allow eachwheel to be directed as desired.

By means of my improved type of spring, it is possible to vary theinitial compression to suit the service to which the truck is being put.Further, in using the truck on hauling loads up a steep grade, it wouldbe desirable to elevate the rear end of the truck so as to place thetruck body on a level plane to prevent the load from shifting.

l Vith my improved springs, each wheel operates independently of allother wheels and therefore, conforms to unevenness of road surfacebetter than the usual forms of springs.

While I have shown a particular form of embodiment of my invention, I amaware that many minor changes therein will readi.y suggest themselves toothers skilled in the art without departing from the spirit and scope ofthe invention, and I therefore, desire to avoid being limited to theexact form shown and described.

What I claim as new and desire to protect by Letters Patent, is-

in a device of the character described, the combination of a cylindricalouter casing attachable to a vehicle frame, a vertical axle shaftrevolubly mounted within said casing and supporting a traction wheel atits lower end, coiled springs interposed between the top of saidvertical. shaft and the upper end of the said casing, whereby aresilient support is formed for the casing with respect to the verticalshaft, rods passing loosely through holes in the top of said casingcentrally through saidco'il springs and through holes in the top of saidvertical shaft, nuts upon the ends of said rods, whereby the initialcompression of the coiled springs may be adjustably varied, andadjustable limit regulated regardless of said rods.

CHARLES J. TRUCANQ.

